1098255 has 16 divisors (see below), whose sum is σ = 1770624. Its totient is φ = 581280.

The previous prime is 1098233. The next prime is 1098269. The reversal of 1098255 is 5528901.

It is not a de Polignac number, because 1098255 - 2⁶ = 1098191 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2992 + ... + 3338.

It is an arithmetic number, because the mean of its divisors is an integer number (110664).

2^1098255 is an apocalyptic number.

1098255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1098255 is a deficient number, since it is larger than the sum of its proper divisors (672369).

1098255 is a wasteful number, since it uses less digits than its factorization.

1098255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 1098255 is about 1047.9766218767. The cubic root of 1098255 is about 103.1733969346.

The spelling of 1098255 in words is "one million, ninety-eight thousand, two hundred fifty-five".